Reservoir-leakage-preventing device



Feb. 24, 1931. E 5, DOWN 1,793,597

RESERVOIR LEAKAGE PREVENTING DEVICE Filed June 28, 1927 Ignl fl circuit Bra/ System INVENTOR SIDNEY G. DOWN ATTORNEY Patented Feb. 24, 193i =SIDNEY e. DOWN, or EDGEWOOD, runnsvtviima, AsstGNOn ro rnnwnsrmenousn' its, rsmts riivanrn, A CORPORATION" F,

hicles AIR COMPANY, 01 W'ILMERDI BENNSYLVANIA .RESERVOIR-LEAKiGE-PREVENTING nEvrcE Application filed June 28,

This invention relates to automotive veand more particularly tothose equipped withfluid pressure'systems.

It has heretofore been proposed to equip an automotive vehicle with a compressed fluid system in which fluid under pressure 7 is stored for use in operating the brakes and for other purposes. When a vehicle so equipped is standing idle, stored fluid under pressure is liable to leak away and conse-.

. quently will not be available for use when desired.

One object of my invention is to provide means effective when the vehicle isidle, for

preventing leakage of fluid under pressure from the fluid pressiue system. 7

A more specific object of my invention is to provide an automotive vehicle with means,

to permit leakage of fluid under pressure,

and also operable upon some manual act in startingthe vehicle to connect the isolated part or parts to the fluid pressure system.

Other objects and advantages will appear in the following more detailed description of my invention.

Inthe accompanying drawing the single figure is a-combined side elevational and sectional view of a portion of an automotive vehicle having my invention embodied therein, a portlon of the ignition circuit being is mounted a fluid compressor l which is adapted to be driven by the propeller engine 12 and is adapted to communicate with a fluid pressure reservoir 5, through pipes 6 and a valve device 7, such reservoir being connected, by a pipe 8 withthe other parts of the fluid pressure system (not shown) The valve device .7 may be of any suitable construction and as shown in the drawing 1927., Serial No. 202,075

,m'ay comprisea casing having avalve9 rotatably mounted therein, which is provided witha passage 10 through which fluid under pressure may flow from the-compressor to permanently connected with 'the' valve 91st) I that, as the lever o'r'key isrotated, the'valve .will be rotated with it.f p

Assuming the 'propellor engine to be oper ating, the compressor 4 will be operated thereby to supply fluid underpressure to the reservoir 5 through the pipes 6 and valve def the engine from operating, he rotates the ignition lever or key 11,- in an anti-clockwise direction, to; the positionas shown in the drawing, causing the ignition switch 3 to be operated to open the electrical ignition; circuit, and at the same time causing the valve 9 to be rotated to its-closed position, thus rendering the engine and compressor at inoperative and at thesame time closing the cornmunlcatlon between the compressor. and the reservoir 5. By thus lsolating the compressor 4 from the reservoir 5, fluid .under'pressure from the reservoir is notpermitted to flow, backto the compressor, thus eliminating the'possibility of leakage of fluid under pressure; through the compressor to the atmos phere;

When the operator desires to start the en- .gine, he rol'atesthe'ig'nition lever or key 11,

a predetermined degree, in a clockwise direc-' tlon, causing the ign tion switch-3 to be operated to close the electrical ignition circuit,

and at the same time rotating the valve 9 so vice 7. When the operator desirestostop operable upon some manual act in stopping the vehicle, for isolating from the fluid pres sure system, the part or parts which are liable thatthe communication between the com-' pressor l and the reservoir 5 is again established; Now, when the operator starts'ihe engine, the compressor, will againfsupply fluid under pressure to reservoir 5.

l do not wish my invention to belimited tothe exact details shownand descrlbed, for I bel eve I am the first to provide an automotive vehicle with means whereby a manual act of stopping the vehicle engine will cause a part or parts of the fiuid pressure system tobe isolated irom other parts of the sys'lem and whereby a manual act of starting the ve hicle engine causes the isolated part or parts to be again introduced into the system.

munication between said compressor and'res- SIDNEY G. DOWN.

Having now described my invention, what.

I claimas new and desire to secure by Letter's Patent, '1s:

1. In an automotive vehicle, the combination with an electrical ignition circuit,,of a' switch device operable for controlling said circuit, a fluid pressure brake system comprising a reservoir, a fluldycompressor, and ga valve device interposed between said reser-- voir and compressor adapted to 'befop'erat'ed with said switch device for controlling a communication between said reservoir andcompressor. r

2. In an automotive vehicle having apropeller'engine, thecombin'ation with an electrical ignition circuit, of a switch device for opening -said-circuit 'to render said engine inoperative and for closing said circuit" preparatory. to "starting "said "engine, a fluid pressure brake system comprisinga reservoir, a fluid 'compressoradapted to be operated to supply fluidunder pressure to said reservoir, and means operable with said switch'devi'ce upon the opening of said circuit for isolating'said compressor fro'rn said reservoir and operable withsaid'switclrdevice upon the closing of said-circuit forestablishing communication between said compressor and reservoir,

,3. In an automotive-vehiclehaving a propeller engine, the combination with an'electrical ignition circuit, of a switch device for opening said circuit to render said engine lnoperatlve and for closing sald' clrcuit preparatory to starting said engine, a fiuid'pres sure brake systemcomprising a reservoir,a fluid compressor adapted to be operated by said engine tosupply fluid'underpressure to said reservoir, and means operable with said switch device upon the openingof said circuit for isolating'said compressor from said reservoir and operable with saidswitch device upon the closing of said" circuit for establishing communication between said compressor and reservoir.

4. In an automotive vehicle having a propeller engine, the combinationwith an electrical ignition circuit, of a manually operable switch for opening said circuit to render said engine inoperative and for closing said'circuit preparatory to starting said engine, a fluid pressure brake system comprisinga reservoir, a fluid compressor adapted to be operated to supply fluid under pressure to said reservoir, and means operable with said switch upon the opening of saidcirc'uit for isolating said compressor from said reservoir and operable with said switch upon the closing of said circuit for estabIiShingcOm- 

